Ford Sierra

1982-1993 of release

Repair and operation of the car



Ford Siyerra
+ 1.2. Identification of the car
+ 2. Maintenance
- 3. General data
   - 3.1. Cars with petrol engines
      3.1.1. Masses and transfer numbers
      3.1.2. Operational liquids
      + 3.1.3. Changes in a car design from 1984 to 1986.
      - 3.1.4. Changes in a car design from 1987 to 1989.
         3.1.4.1. OHC engine
         - 3.1.4.2. Dm3 CVH 1,8 engine
            + 3.1.4.2.1. Technical characteristics
            3.1.4.2.2. Adjustment of the engine
            3.1.4.2.3. System of ignition
            3.1.4.2.4. System of gas distribution
            3.1.4.2.5. Assembly of the CVH 1,8 engine of dm3
         + 3.1.4.3. DOHC engine
         + 3.1.4.4. Service and repair
         + 3.1.4.5. Coupling
         3.1.4.6. Mechanical five-speed transmission of N type
         + 3.1.4.7. Mechanical MT 75 five-speed transmission
         3.1.4.8. Automatic transmission
         3.1.4.9. Forward suspension bracket
         + 3.1.4.10. Brake system
         + 3.1.4.11. Electric equipment
         3.1.4.12. General data
      + 3.1.5. Changes in a car design from 1990 to February, 1993.
   + 3.2. Cars with diesel engines
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment


a773976c

3.1.4.2.3. System of ignition

GENERAL INFORMATION

Elements of system of ignition of the CVH engine of 1,8 dm of quarter like R2A

1 – a pulley of a maple belt of a bent shaft with a gear wreath,
2 – sensor of situation and speed of a bent shaft,
3 – ignition distributor drive,
4 – bolt of fastening of the drive,
5 – ignition distributor arm,
6 – distributor rotor,
7 – distributor cover

Principle of functioning

The electronic module of management of ignition of ESC receives signals from the sensor of situation and speed, the sensor of temperature of cooling liquid, the sensor of temperature of the arriving air and the vacuum sensor in an inlet collector.

On the basis of these signals, and also the card of optimum angles of an advancing of ignition under various operating conditions of the engine which is written down in memory, the microprocessor ESC module operates current in primary winding of the coil of ignition, defining the moment of interruption of current in primary winding of the coil depending on the received signals. The high-tension current moves via the ignition distributor to wires of spark plugs.

Then the module includes current in primary winding on strictly certain period and process repeats again, and the corner of an advancing of ignition changes the module depending on the obtained information.

The module of management of ignition of ESC performs the following functions:

  – determines engine speed depending on a period which passes between the next impulses generated by the wreath teeths moving in front of the sensor of situation and speed (a double cut) between teeths of a wreath defines the provision of a bent shaft 45 ° before VMT);
  – defines the vacuum in an inlet collector testifying to engine loading degree;
  – on the basis of the obtained information and data which are contained in memory defines an ignition advancing corner, optimum under these operating conditions;
  – switches on and off current in primary winding of the coil of ignition, causing formation of the high voltage creating an ignition spark.

The electric circuit of the electronic managing director of a contour of system of ignition like ESC

1 – ESC module,
2 – starter relay,
3 – generator,
4 – starter,
5 – electromagnetic valve of a damper of the lever of a butterfly valve (dash-pot),
6 – ignition switch,
7 – sensor of temperature of cooling liquid,
8 – sensor of temperature of arriving
air,
9 – sensor of situation and speed of a bent shaft,
10 – accumulator,
11 – ignition coil,
12,13 – sockets of wires of the proofreader of octane number of fuel,
14 – diagnostic socket

The ESC module, besides, operates the engine putting in action a butterfly valve of the carburetor in the idling range, correcting its provision depending on loading (automatic transfer is included, conditioning is included) and a thermal condition of the engine.

Check of system of ignition

The system of ignition does not demand adjustment. Removal and installation of the distributor of ignition does not present great difficulties (see rice. Elements of system of ignition of the CVH engine of 1,8 dm of quarter like R2A) especially as it can be installed only in one, correct situation.

The distributor of ignition is checked by means of a multimeter. The method of check is given in the table concerning check of system of ignition.

Method of check of system of ignition of ESC
The checked element
Measurement between contacts
Value
Remarks
Connection of a case with weight
"9" and weight
"10" and weight
0 – 0,5 Ohms
Ignition is switched off
Starter relay
"11" and weight
12 – 14 V
Ignition is included
Electromagnetic valve of a damper of the lever of a butterfly valve (dash-pot)
"12" and weight
12 – 14 V
Ignition is included
Sensor of temperature of cooling liquid
"26" and "27"
Ignition is switched off
The sensor of temperature of the arriving air
"15" and "26"
Ignition is switched off
Sensor of situation and speed of a bent shaft
"22" and "23"
Ignition is switched off
Power supply of primary winding of the coil of ignition
"8" and "9"
12 – 14 V
Ignition is included
Proofreader of octane number of fuel
"25" and "9"
"24" and "9"
Resistance infinitely big
Before check to disconnect the ESC module; ignition is included